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SGM3803 - 90% Efficient Synchronous Step-Up Converter

General Description

The SGM3803 is a constant frequency, current mode, synchronous step-up switching regulator with 200mA negative charge pump inverter which generates an unregulated negative output voltage from an input voltage ranging from 1.4V to 5.5V.

Key Features

  • Boost DC/DC.
  • 90% Efficient Synchronous Boost Converter.
  • Device Quiescent Current: 30µA (TYP).
  • Less than 1μA Shutdown Current.
  • Input Voltage Range: 2.7V to 5.5V.
  • Output Voltage Clamping: 6V.
  • Adjustable Output Voltage Up to 5.5V.
  • Power-Save Mode for Improved Efficiency at Low Output Power.
  • Load Disconnect During Shutdown.
  • Low Reverse Leakage Current when VOUT1 > VCC.
  • 1.8V Logic on EN1 Pin for Control.
  • Over-Temperature Protection Negative Charg.

📥 Download Datasheet

Datasheet Details

Part number SGM3803
Manufacturer SG Micro
File Size 670.48 KB
Description 90% Efficient Synchronous Step-Up Converter
Datasheet download datasheet SGM3803 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SGM3803 90% Efficient Synchronous Step-Up Converter with 200mA Negative Charge Pump Inverter GENERAL DESCRIPTION The SGM3803 is a constant frequency, current mode, synchronous step-up switching regulator with 200mA negative charge pump inverter which generates an unregulated negative output voltage from an input voltage ranging from 1.4V to 5.5V. The device is typically used to generate +5V and -5V from battery. High switching frequency minimizes the sizes of inductor and capacitor. Only three external capacitors are required to build a complete charge pump inverter. Integrated power MOSFETs and internal compensation of boost DC/DC make the SGM3803 simple to use and fit the total solution into a compact space.